Machine for cutting paper, &amp;c.



L. OHAMBON.

MACHINE FOR CUTTING PAPER, &o.

APPLICATION FILED mm; 30, 1909.

Patented Mar. 29, 1910.

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L. GHAMBON.

MACHINE FOR CUTTING PAPER, 6m.

APPLIOATION FILED JUNE 30, 1909.

Patented Mar.29, 1910.

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UNITED T OFFICE.

LOUIS CI-I AMBON, OF PARIS, FRANCE.

MACHINE FOR CUTTING PAPER, 860.

To all whom it may concern:

Be it known that I, Louis ()IIAMBON, citizen of France, residing atParis, in the said Republic, have invented new and useful Improvementsin Machines for Cutting Paper or the Like, (for which I have filed anapplication for a patent in France, No. 391,849, bearing date July 1,1908,) of which the following is a specification.

This invention relates to an improved machine for cutting paper,cardboard, or anylike product adapted to be unrolled from a roll.

The machine insures a rapid and perfectly smooth cut it being arrangedthat the period during which the cutting knife is cooperating with thecounter-blade corresponds with the period during which the paper or thelike proceeding from the feeding apparatus is not appreciably advancedby the draft cylinders.

The accompanying drawings illustrate the invention, Figure 1 being avertical section on line A-B of Fig. 2 viewed in the direction of thearrows II. Fig. 2 is a vertical section on line C-D of Fig. 1. Fig. 3 isa sectional elevation corresponding with Fig. 1 but showing the parts ofthe machine in a different position.

The same reference numerals indicate the same parts in the variousfigures.

The apparatus comprises a shaft 1 journaled in uprights 2 and 3 anduniformly rotated through a gear wheel 1 in the direction indicated bythe arrow m. he shaft performs one revolution for each cuttingoperation.

On the shaft 1 are keyed in the same angular position two identicaleccentrics 5 and 6 controlling two connecting rods 7 and. 8 which moveup and down a frame consisting of two levers 9 and 10 and two rods 11and 12. The frame carries a knife 13 which owing to the movement of theframe oscillates about the axis 12 and toward the end of its strokecooperates with the counterblade 14 fixed on a table 15 carried by theuprights 2 and 3.

011 the driving shaft 1 is mounted free a cylinder 16 carrying aninternal ring of teeth 17. These teeth engage with pinion 18 fixed tothe connecting rod 7 and concentric with the eccentric 5.

Specification of Letters Patent. Application filed June 30, 1909.

The difference between the radius of toothed ring 17 and pinion 18 isequal to Patented Mar. 29, 1910. Serial No. 505,280.

the radius of eccentric 5 or 6. During the movement of the pinion 18together with the connecting rod 7, the pitch circle of this pinionrolls on that of the ring 17 in such a manner that at each revolution ofthe shaft 1 the point of contact of the pitch circles of pinion 18 andrin 17 occupies the same position in space as does also the pinion 18.The two pitch circles have then rolled on one another through a distanceequal to the circumference of the pitch circle of the pinion 18.

When shaft 1 has performed a complete revolution the initial point ofcontact of the pitch circles in question has turned through an are equalto the circumference of the pinion 18. It follows that the ring 17 turnsin the direction of rotation of shaft 1 through an are equal to thedifference between the said pitch circles. In space the ring 17 makesone quarter of a revolution for each revolution of shaft 1 since theradius of cocentric 5 is equal to one-fourth of the radius of the pitchcircle of the ring 17. Further more, since the center of the pin 19connect ing the connecting rod 7 with the lever 9 is on the pitch circleof the pinion 18, it follows that in the position shown in Fig. 3 whichcorresponds with the lower position of the knife, the cylinder 16 has aspeed of rotation which is mil since the point of contact has a speedwhich is oil. This speed increases as the position of the parts passesfrom that shown in Fig. 3 to that shown in Fig. 1, which correspondswith the upper position of the knife; in this latter position the speedis at a maximum; it then decreases to zero again as the parts returnfrom the position shown in Fig. l to that shown in Fig. 3.

The cylinder 20 mounted on a shaft 21 which turns in eccentric bearings22, 23, carried by counter-poised levers 24, 25, presses on the cylinder16 and is turned by friction therewith. The paper P drawn from the rollpasses over a fixed guide 26 mounted on a shaft 27 and around thecylinder 16; it then passes between the two cylinders 16 and 20 both ofwhich are sheathed in leather 28, 29 to increase the f 'iction on thepaper. By these cylinders the paper is advanced along the table 15 whichis arranged to prevent any deviation of the paper.

At each revolution of the shaft 1 the cylinders 16 and 20 advance alength of paper equal to one-fourth of the circumference of cylinder 16,this advancement being at first accelerated and then retarded.

The time during which the knife 13 is 00- operating with thecounter-blade 14 corresponds with the period during which the speed ofthe cylinders is practically ml and the rapidity with which the cut iseffected is such that the paper does not receive an appreciable advanceduring the operation.

Having thus described my invention and the best means I know of carryingthe same into practical effect, I claim A machine for cutting paper,cardboard or like product adapted to be unrolled from a roll, comprisinga driving shaft, a draft cylinder mounted on the said shaft, aninternally toothed ring fixed co-aXially to the said cylinder, aneccentric keyed to the said driving shaft, a connecting rod mounted onthe said eccentric, a frame adapted to be moved up and down by the saidconnecting rod, a. knife carried by the said frame, a counter-bladeWherewith the said knife is adapted to cooperate, a pinion fixed to thesaid connecting rod concentrically with the said eccentric and adaptedto engage the said toothed ring, the ratio of the diameters of the saidpinion and toothed ring being such that when the connecting rod haslowered the frame into the position of cooperation of the counter-bladethe speed of the draft cylinder is ml and remains substantially nilduring the cutting operation.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS CHAMBON.

Witnesses J ULES FAYoLLET, EUGENE PIoHoN.

